WL#2438: Implement support for HANDLER interface for ndbcluster

./mysql-test-run --with-ndbcluster --do-test=handler
--mysqld="--default-storage-engine=ndbcluster"
handler                        [ fail ]

Errors are (from
/usr/local/home/marty/MySQL/test/mysql-5.0-ndb/mysql-test/var/log/mysqltest-time) :
/usr/local/home/marty/MySQL/test/mysql-5.0-ndb/client/.libs/mysqltest: At line
14: query 'handler t1 open as t2' failed: 1031: Table storage engine for 't2'
doesn't have this option

Doesn't seem to be complete for innodb either, they have their own tests for this.
(tried running as above with innodb and it failed several tests).
We should try and get something similar as innodb_handler.test working for
ndbcluster.